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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation3 Marks
Question
Human blood group is a good example of multiple allelism and co-dominance. Justify.
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Answer

Multiple allelism: Generally in an individual/population, only two alleles of a trait govern the character, but in case of ABO blood group, three alleles IA, IB and i are found to govern blood group in human population.

Co-dominance: Allele IA and IB when present in an individual, both being dominant express their own types of sugars/traits.

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